What does the mask command in `systemctl` do?

Prevents a service from running or starting

What is cron used for in Unix-like operating systems?

Scheduling recurring tasks at fixed times, dates, or intervals

What does the `at` command do in Unix-like systems?

Schedules one-time job execution

How to troubleshoot a service that fails to start using `systemctl`?

Check the service status using `systemctl status ` and review logs for errors.

Describe a scenario where using the `mask` command in `systemctl` would be appropriate.

When a service should never be started, even manually.

How would you plan a maintenance task using `cron` to minimize system downtime?

Schedule the task during off-peak hours to minimize impact.

What steps would you take to ensure a secure password policy in a Linux system?

Implement password expiration and complexity requirements.

What is the difference between `systemctl stop` and `systemctl disable`?

`systemctl stop` stops a service temporarily, while `systemctl disable` prevents it from starting at boot.

Why might users encounter difficulties accessing files, and what can contribute to permission issues?

Incorrect or inadequate group memberships and incorrect file attributes.

What is an access control list (ACL), and what issues can arise if it is not configured properly?

An ACL provides control over file access. Issues can arise when it is not configured properly, leading to users being unable to access files they should have access to or vice versa.

What type of problems can be categorized as attribute issues in the context of user access and file permissions?

Problems related to file attributes such as ownership, timestamps, or file type.

What do privilege elevation issues involve in the context of user access and file permissions?

Problems with users seeking administrative privileges or elevated permissions to perform specific actions.

What do quota issues involve in the context of user access and file permissions?

Problems with users exceeding allocated storage quotas, resulting in limitations on file creation or access.

What is the overarching purpose of managing user access and file permissions, and why is it crucial for system operation?

To ensure smooth system operation and user productivity by addressing challenges related to login, file access, password management, privilege elevation, and storage quotas.

How can improper configuration of access control lists (ACLs) affect user access?

It can lead to users being unable to access files they should have access to or vice versa.

What strategic approach can be used to resolve user login issues related to authentication methods?

Reviewing and updating authentication methods to ensure they are secure and user-friendly.

What is a potential consequence of not managing user access and file permissions effectively?

Unauthorized access to sensitive information.

How can strategic planning help in managing privilege elevation issues?

By implementing a clear policy for privilege elevation requests and regularly reviewing user permissions.

What role do file attributes play in user access and file permissions?

They define the ownership, timestamps, and type of files, affecting access permissions.

How can quota management issues be strategically addressed to ensure smooth system operation?

By regularly reviewing and adjusting storage quotas based on user needs and system capacity.

What is the purpose of the "sudo" command in Linux?

To run a command as a different user with administrative privileges

Valid use of the "PolicyKit" (PolKit) utility in Linux?

To manage who can perform operations requiring administrative privileges

What does the "visudo" command do before allowing edits to the "sudoers" file?

Checks if the file is open by another user

Explain why it is important to use the `visudo` command instead of directly editing the `sudoers` file with a text editor.

It prevents syntax errors that could lock out administrative access.

How does the `pkexec` command differ from `sudo` in terms of user authentication?

`pkexec` uses a graphical authentication dialog, while `sudo` uses terminal-based authentication.

Describe a scenario where using `sudo` would be more appropriate than `pkexec`.

When executing a command that requires terminal input.

What is the effect of using the `su -` command without specifying a username?

It switches to the root user with the root user's environment.

What is a potential risk of directly editing the `sudoers` file with a text editor instead of using `visudo`?

The file could become corrupted, preventing any user from gaining administrative access.

Forensics M2.4.2, N4.4.1, O1.4.1 Flashcards

Student preview

46 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What high school do you attend?

Back

Klein Collins High School

2.

FLASHCARD QUESTION

Front

What are some common problems associated with user login issues?

Back

Problems like username/password issues, authentication methods, or account lockouts due to multiple failed login attempts.

3.

FLASHCARD QUESTION

Front

What is the primary purpose of the `systemctl` command in Linux?

Back

To manage system services

4.

FLASHCARD QUESTION

Front

Which `systemctl` command is used to stop a running service?

Back

`systemctl stop `

5.

FLASHCARD QUESTION

Front

How is the restart command used with `systemctl` to restart a service?

Back

`systemctl restart `

6.

FLASHCARD QUESTION

Front

What does the status command in `systemctl` provide information about?

Back

Whether a service is running or stopped

7.

FLASHCARD QUESTION

Front

Which `systemctl` command is used to enable a service to start automatically at boot time?

Back

`systemctl enable `

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